CA1337733C - Continuous or semi-continuous casting apparatus for casting metallic materials - Google Patents
Continuous or semi-continuous casting apparatus for casting metallic materialsInfo
- Publication number
- CA1337733C CA1337733C CA000596726A CA596726A CA1337733C CA 1337733 C CA1337733 C CA 1337733C CA 000596726 A CA000596726 A CA 000596726A CA 596726 A CA596726 A CA 596726A CA 1337733 C CA1337733 C CA 1337733C
- Authority
- CA
- Canada
- Prior art keywords
- ring
- mold
- metal
- gas
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/07—Lubricating the moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/0401—Moulds provided with a feed head
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
A continuous or semi-continuous casting apparatus of the direct chill type for casting metallic materials, particu-larily rectangular ingots of aluminium, comprises a mold (1) which has an open inlet (2) for the filling of melted metal and a mold cavity (4) with an open outlet with water supply means for cooling of the metal. The mold cavity is at a distance from its inlet provided with a permeable ring (20) for the supply of oil and/or gas, such that a layer of oil and/or gas is formed between the metal and mold wall whereby the metal is prevented from coming into contact with the mold wall before it solidifies. The surface of the ring, with the exception of the side facing the mold cavity, is provided with a sealing agent which prevents the oil and/or gas from escaping through the surface. Further, the ring, in its peripherical direction, is provided with longitudinal bores or holes for supplying oil and/or gas to said bores via bores through the mold wall and further into the graphite ring from the outside of the mold.
Description
The present invention relates to continuous or semi-continu-ous casting apparatus of the direct chill type for casting metallic materials, particularly rectangular ingots of alu-minium, comprising a mold cavity which has an open inlet for the filling of melted metal and an open outlet with water supply means for cooling of the metal, and that the mold cavity, at a distance from its inlet, is provided with a permeable ring for the supply of oil and/or gas, such that a layer of oil and/or gas is formed between the metal and mold wall whereby the metal is prevented from coming into contact with the mold wall before it solidifies.
It is previously-known to supply oil or gas to the mold cavity as mentioned above. Inter alia NO patent application No. 830858 reveals a casting apparatus for ingots where gas and oil is supplied to the mold cavity via a graphite ring which is disposed in the mold wall close to the mold outlet.
Oil and gas is supplied to the graphite ring through separate bores in the outer mold wall (sleeve). By means of channels on the outer side of the ring which are connected to the bores in the sleeve, the oil and gas is distributed around the periphery of the ring.
To avoid oil and gas leakage between the ring and sleeve, it is necessary that the ring and sleeve are sealed tight to one another. Thus the diameter of the graphite ring is mac-hined to size which is a bit longer than the diameter of the sleeve. When mounting takes place, the sleeve is heated to ~' expand so that the rlng can be placed ln lts rlght posltlon on the sleeve. Further, when coollng the sleeve, lt wlll shrink whereby seallng ls achleved between the rlng and sleeve.
However, thls wlll demand a very flne machlnlng of the rlng as well as the sleeve, and the smallest surface defect or scratch wlll result ln leakage.
Wlth the above demands regardlng tolerances and surface roughness, lt ls obvlous that the graphlte rlng revealed in the prevlously mentioned NO patent appllcatlon ls expenslve to manufacture and use.
Besldes, the above type of rlng ls hardly appllcable for castlng apparatus produclng rectangular lngots. Prlmarlly because the metal parts of the mold are mllllng machlned, and secondarlly because the graphlte "rlng" has to have a rectangular conflguratlon, l.e. the sldes of the rlng (frame) wlll be deflected lnwardly so that lt ls lmposslble to use force flt between the rlng and the sleeve.
It ls an ob~ect of the present lnventlon to provlde castlng apparatus whlch uses a permeable rlng, for lnstance of graphlte, whlch ls not encumbered wlth the above dlsadvantages, l.e., whlch ls slmple and lnexpenslve to manufacture and whlch ls partlcularly appllcable to castlng apparatus produclng rectangular lngots or other types of contlnuous or seml-contlnuous cast products where the cross sectlon devlates from the circular one.
The present lnventlon provldes a contlnuous or seml-continuous casting apparatus of the direct chill type for casting metalllc materlals, partlcularly metal lngots, sald apparatus comprlslng: a mold deflning~a mold cavlty wlth an open lnlet for the lntroductlon of molten metal, an open outlet for wlthdrawal of solldlfled metal, and coolant supply means for supplylng coolant ad~acent sald outlet for coollng metal; a rlng, formed of a materlal that ls permeable to at least one of oll and gas, mounted ln sald mold at a posltlon spaced from sald lnlet, sald rlng havlng a plurallty of surfaces lncludlng at least one flrst surface faclng and deflnlng a portlon of sald mold cavlty; at least one annular bore formed ln sald rlng and extendlng through sald rlng throughout the entlre annular dlmenslon thereof; at least one hole extendlng through sald rlng from the exterlor thereof and openlng lnto sald annular bore, such that at least one of oll and gas may be supplled from the exterlor of sald mold to sald hole and then to sald annular bore, whereby such at least one of oll and gas passes through sald materlal of sald rlng and enters sald mold cavlty through sald at least one flrst surface of sald rlng to form a layer between the metal wlthln sald mold cavity and the wall of sald mold to prevent the metal from contactlng sald wall before the metal solldlfles;
and all of sald surfaces of sald rlng other than sald at least one flrst surface thereof belng covered wlth a seallng agent preventlng the escape therethrough of the at least one of oll and gas.
The lnventlon wlll now be further descrlbed by means of examples and wlth reference to the drawlngs ln whlch:
Flg. 1 ls a vertlcal cross sectlon of the slde wall of a castlng mold for castlng rectangular lngots ln whlch the _ 1 337733 rlng accordlng to the lnventlon ls used, Flg. 2 shows another vertlcal cross sectlon of the same, Flg. 3 shows the rlng ln a smaller scale, from above, Flg. 4 shows ln cross sectlon an example of a clrcular rlng composed of rlng elements, Flg. 5 shows the dlfferent rlng elements of whlch the rlng accordlng to Flg. 4 is composed, Flg. 6 shows another example of a rlng made of rlng elements.
As mentloned above Flg. 1 shows a vertlcal cross sectlon of castlng mold for castlng rectangular lngots. Slnce the lngots have rectangular shape, lt wlll be understood that the castlng mold accordlng to the present example has four walls, each wlth an lnternal conflguratlon as shown ln Flg. 1.
The hollow mold comprlses an upper upwardly open lnlet part 2, an lnwardly protrudlng mlddle part 3, and a lower mold B - 3a -~ 337733 4 cavity 4 which is downwardly open and has a length and width relationship corresponding to the cross sectional measure-ments of the ingot.
At the mold cavity 4 opening, i.e. by the outlet of the mold, is provided a support 5 which is moveable in the vertical direction by means of a piston/cylinder arrangement or the like (not shown). This support seals off the opening of the mold at the beginning of the casting cycle, cfr. later sec-tion.
The mold inlet wall consists of an outer reservoir frame 6 made of steel, on the inside of which is provided a plate 7 of refractory material. The reservoir frame is further con-nected to a base frame 18 which is also made of steel.
Beyond the refractory plate 7 is provided additional pieces 8,9 of refractory material forming the middle part of the mold, the so-called "hot-top" 10.
The hot-top 10 forms a narrow pass within the hollow mold in the direction of the metal flow and creates an overhang with a flat part 11 at the inlet of the mold cavity 4.
The refractory pieces are secured to one another by means of a screw connection 13, which in turn is secured to an alu-minium/steel sleeve 12 by means of another screw connection 14. The sleeve 12 is at its lower end provided with an in-wardly protruding projection 15, which with its end side 16 forms the lower side wall of the mold cavity 4. Besides, the sleeve has an angular configuration, whereof one of the legs 17 protrudes outwardly, in opposite direction relative to the projection 15. The leg 17 and thereby alco the sleeve 12, is securely attached to the base frame 1~ by means of a screw connection.
Between the projection 15 and the hot-top 10 is provided a permeable "ring" 20 which with its inner side 23 forms the upper wall of the mold cavity. The ring is in the present example also provided with an inwardly extending step 25, where the side 24 facing downwards is somewhat withdrawn (at a higher level) relative to the horisontal part 11 of the hot-top (approx. 1-2 mm).
When during the casting process gas is supplied to the ring, a gas cavity is created in this area which provides an iso-lating layer between the ring and the melt and which provides an even distribution of gas all around the hollow mold peri-phery.
The permeable ring 20 is further provided with two bores 21,22 in the longitudinal (circumferential) direction of the ring. One of the bores, 21, which is slightly on the inside of and below the corner between the hot-top and the mold wall 23, is used for the supply of gas to the ring, while the upper bore 22 is used for the supply of oil to the ring.
The oil and gas is supplied to the ring under a certain pressure, and since the sides of the ring, with the exception of the sides 23,24 facing the mold cavity where the metal is present during casting, is provided with a sealing agent, the gas and oil will penetrate the ring from the bores 21,22 and come into the mold cavity. In the drawing, the sides being provided with the sealing agent is marked with somewhat thicker lines.
The ring 20 is at its lower end provided with a tongue 27 which corresponds to a groove 26 in the projection 15 of the sleeve. And by means of a simple screw-clamping connection 28, the ring is pressed against and securely fastened to the sleeve 12. The base frame 18 is made of square pipes 29.
Water is supplied to the mold through these pipes and further _ 6 1 337733 via a slot between the sleeve leg 17 and a water slot profile 31. On the sleeve projection 15 is provided a downwardly protruding tongue 32 which deflects the water jet and leads it downwards and inwardly towards the metal being cast.
The performance of the casting is as follows:
The support 5 is stationed in its upper position sealing off the outlet of the mold. Oil and gas is supplied to the ring 24, simultanously with the water supply valve being opened.
Metal melt, for instance aluminium, can now be filled into mold inlet 1.
As soon as the metal at the lower part of the metal begins to solidify, the support may be lowered. Very soon a gas cavity is created along the periphery of the mold at the corner below the hot-top 10, and as the metal flows down-wards, a gas and oil film or layer is provided between the metal and mold wall.
As the walls of the mold cavity defines a rectangular open-ing, an ingot with rectangular cross section is produced.
The casting cycle is stopped when the support has reached its lowermost position.
Casting of the above described type is denoted to be semi-continuous casting. The casting does not only take place in one mold at a time, but in several molds simultaniously as the molds are interconnected in groups.
Fig. 2 shows a cross section of the mold wall in an area where the oil is supplied to the permeable ring 20. As will be appearant from Fig. 2, the oil is supplied through bores 33,34 in the sleeve 12 and further via a traverse bore 35 into the bore 22 in the ring.
_ 7 1~3773-~
Between the ring 20 and sleeve 12 is provided a gasket (seal ring) 36 which prevents the oil from entering into the space between the sleeve and the ring. A corresponding arrangement (not shown) is provided for the supply of gas to the other bore 21.
Fig. 3 shows the ring 20 in a smaller scale, seen from above.
The ring is composed of several elements being glued to one another at their transverse ends 40. In this example, the ring consists of six long side elements 37, two short end elements 39 and four corner elements 38. Dotted lines in the drawing (pos. 41) shows where the oil and gas supply is connected to the ring. As can be seen, the oil and gas is supplied to each of the long sides and each of the short ends respectively.
Though Fig. 3 shows a permeable ring made of several ele-ments, it is obviously possible, within the frame of the invention, to make the ring from one single piece of perme-able material. Further, it is obvious that the ring according to the invention can have other cross sections than what is shown in Fig. 1 and 2, and can be used for casting other ingot shapes than the one previously mentioned.
In Figs. 4 and 5 is shown the cross section of sircular ring assambled by means of gluing, and which is used in casting apparatus for casting ingots with sircular shape. The ring is made of ring elements 42,43,44 being provided with grooves 45 which after the assemblance forms rectangular or sircular holes (bores) 46 in the ring.
Fig. 6 shows another example of a permeable ring made of two ring elements, whereof an upper ring element 47 is partly overlapping a lower ring element 48. The two elements 47,48 are attached to one another by means of gluing.
_ 8 A slit 49 is provided between the two ring elements in their peripherical direction for the supply of oil to the ring via two diametrically arranged bores 50 (only one bore is reve-aled in the figure). The overlapping provides a more even oil distribution through the ring.
Gas may be supplied to the ring element 48 through a groove 50 streching along the circumference of the ring.
It is previously-known to supply oil or gas to the mold cavity as mentioned above. Inter alia NO patent application No. 830858 reveals a casting apparatus for ingots where gas and oil is supplied to the mold cavity via a graphite ring which is disposed in the mold wall close to the mold outlet.
Oil and gas is supplied to the graphite ring through separate bores in the outer mold wall (sleeve). By means of channels on the outer side of the ring which are connected to the bores in the sleeve, the oil and gas is distributed around the periphery of the ring.
To avoid oil and gas leakage between the ring and sleeve, it is necessary that the ring and sleeve are sealed tight to one another. Thus the diameter of the graphite ring is mac-hined to size which is a bit longer than the diameter of the sleeve. When mounting takes place, the sleeve is heated to ~' expand so that the rlng can be placed ln lts rlght posltlon on the sleeve. Further, when coollng the sleeve, lt wlll shrink whereby seallng ls achleved between the rlng and sleeve.
However, thls wlll demand a very flne machlnlng of the rlng as well as the sleeve, and the smallest surface defect or scratch wlll result ln leakage.
Wlth the above demands regardlng tolerances and surface roughness, lt ls obvlous that the graphlte rlng revealed in the prevlously mentioned NO patent appllcatlon ls expenslve to manufacture and use.
Besldes, the above type of rlng ls hardly appllcable for castlng apparatus produclng rectangular lngots. Prlmarlly because the metal parts of the mold are mllllng machlned, and secondarlly because the graphlte "rlng" has to have a rectangular conflguratlon, l.e. the sldes of the rlng (frame) wlll be deflected lnwardly so that lt ls lmposslble to use force flt between the rlng and the sleeve.
It ls an ob~ect of the present lnventlon to provlde castlng apparatus whlch uses a permeable rlng, for lnstance of graphlte, whlch ls not encumbered wlth the above dlsadvantages, l.e., whlch ls slmple and lnexpenslve to manufacture and whlch ls partlcularly appllcable to castlng apparatus produclng rectangular lngots or other types of contlnuous or seml-contlnuous cast products where the cross sectlon devlates from the circular one.
The present lnventlon provldes a contlnuous or seml-continuous casting apparatus of the direct chill type for casting metalllc materlals, partlcularly metal lngots, sald apparatus comprlslng: a mold deflning~a mold cavlty wlth an open lnlet for the lntroductlon of molten metal, an open outlet for wlthdrawal of solldlfled metal, and coolant supply means for supplylng coolant ad~acent sald outlet for coollng metal; a rlng, formed of a materlal that ls permeable to at least one of oll and gas, mounted ln sald mold at a posltlon spaced from sald lnlet, sald rlng havlng a plurallty of surfaces lncludlng at least one flrst surface faclng and deflnlng a portlon of sald mold cavlty; at least one annular bore formed ln sald rlng and extendlng through sald rlng throughout the entlre annular dlmenslon thereof; at least one hole extendlng through sald rlng from the exterlor thereof and openlng lnto sald annular bore, such that at least one of oll and gas may be supplled from the exterlor of sald mold to sald hole and then to sald annular bore, whereby such at least one of oll and gas passes through sald materlal of sald rlng and enters sald mold cavlty through sald at least one flrst surface of sald rlng to form a layer between the metal wlthln sald mold cavity and the wall of sald mold to prevent the metal from contactlng sald wall before the metal solldlfles;
and all of sald surfaces of sald rlng other than sald at least one flrst surface thereof belng covered wlth a seallng agent preventlng the escape therethrough of the at least one of oll and gas.
The lnventlon wlll now be further descrlbed by means of examples and wlth reference to the drawlngs ln whlch:
Flg. 1 ls a vertlcal cross sectlon of the slde wall of a castlng mold for castlng rectangular lngots ln whlch the _ 1 337733 rlng accordlng to the lnventlon ls used, Flg. 2 shows another vertlcal cross sectlon of the same, Flg. 3 shows the rlng ln a smaller scale, from above, Flg. 4 shows ln cross sectlon an example of a clrcular rlng composed of rlng elements, Flg. 5 shows the dlfferent rlng elements of whlch the rlng accordlng to Flg. 4 is composed, Flg. 6 shows another example of a rlng made of rlng elements.
As mentloned above Flg. 1 shows a vertlcal cross sectlon of castlng mold for castlng rectangular lngots. Slnce the lngots have rectangular shape, lt wlll be understood that the castlng mold accordlng to the present example has four walls, each wlth an lnternal conflguratlon as shown ln Flg. 1.
The hollow mold comprlses an upper upwardly open lnlet part 2, an lnwardly protrudlng mlddle part 3, and a lower mold B - 3a -~ 337733 4 cavity 4 which is downwardly open and has a length and width relationship corresponding to the cross sectional measure-ments of the ingot.
At the mold cavity 4 opening, i.e. by the outlet of the mold, is provided a support 5 which is moveable in the vertical direction by means of a piston/cylinder arrangement or the like (not shown). This support seals off the opening of the mold at the beginning of the casting cycle, cfr. later sec-tion.
The mold inlet wall consists of an outer reservoir frame 6 made of steel, on the inside of which is provided a plate 7 of refractory material. The reservoir frame is further con-nected to a base frame 18 which is also made of steel.
Beyond the refractory plate 7 is provided additional pieces 8,9 of refractory material forming the middle part of the mold, the so-called "hot-top" 10.
The hot-top 10 forms a narrow pass within the hollow mold in the direction of the metal flow and creates an overhang with a flat part 11 at the inlet of the mold cavity 4.
The refractory pieces are secured to one another by means of a screw connection 13, which in turn is secured to an alu-minium/steel sleeve 12 by means of another screw connection 14. The sleeve 12 is at its lower end provided with an in-wardly protruding projection 15, which with its end side 16 forms the lower side wall of the mold cavity 4. Besides, the sleeve has an angular configuration, whereof one of the legs 17 protrudes outwardly, in opposite direction relative to the projection 15. The leg 17 and thereby alco the sleeve 12, is securely attached to the base frame 1~ by means of a screw connection.
Between the projection 15 and the hot-top 10 is provided a permeable "ring" 20 which with its inner side 23 forms the upper wall of the mold cavity. The ring is in the present example also provided with an inwardly extending step 25, where the side 24 facing downwards is somewhat withdrawn (at a higher level) relative to the horisontal part 11 of the hot-top (approx. 1-2 mm).
When during the casting process gas is supplied to the ring, a gas cavity is created in this area which provides an iso-lating layer between the ring and the melt and which provides an even distribution of gas all around the hollow mold peri-phery.
The permeable ring 20 is further provided with two bores 21,22 in the longitudinal (circumferential) direction of the ring. One of the bores, 21, which is slightly on the inside of and below the corner between the hot-top and the mold wall 23, is used for the supply of gas to the ring, while the upper bore 22 is used for the supply of oil to the ring.
The oil and gas is supplied to the ring under a certain pressure, and since the sides of the ring, with the exception of the sides 23,24 facing the mold cavity where the metal is present during casting, is provided with a sealing agent, the gas and oil will penetrate the ring from the bores 21,22 and come into the mold cavity. In the drawing, the sides being provided with the sealing agent is marked with somewhat thicker lines.
The ring 20 is at its lower end provided with a tongue 27 which corresponds to a groove 26 in the projection 15 of the sleeve. And by means of a simple screw-clamping connection 28, the ring is pressed against and securely fastened to the sleeve 12. The base frame 18 is made of square pipes 29.
Water is supplied to the mold through these pipes and further _ 6 1 337733 via a slot between the sleeve leg 17 and a water slot profile 31. On the sleeve projection 15 is provided a downwardly protruding tongue 32 which deflects the water jet and leads it downwards and inwardly towards the metal being cast.
The performance of the casting is as follows:
The support 5 is stationed in its upper position sealing off the outlet of the mold. Oil and gas is supplied to the ring 24, simultanously with the water supply valve being opened.
Metal melt, for instance aluminium, can now be filled into mold inlet 1.
As soon as the metal at the lower part of the metal begins to solidify, the support may be lowered. Very soon a gas cavity is created along the periphery of the mold at the corner below the hot-top 10, and as the metal flows down-wards, a gas and oil film or layer is provided between the metal and mold wall.
As the walls of the mold cavity defines a rectangular open-ing, an ingot with rectangular cross section is produced.
The casting cycle is stopped when the support has reached its lowermost position.
Casting of the above described type is denoted to be semi-continuous casting. The casting does not only take place in one mold at a time, but in several molds simultaniously as the molds are interconnected in groups.
Fig. 2 shows a cross section of the mold wall in an area where the oil is supplied to the permeable ring 20. As will be appearant from Fig. 2, the oil is supplied through bores 33,34 in the sleeve 12 and further via a traverse bore 35 into the bore 22 in the ring.
_ 7 1~3773-~
Between the ring 20 and sleeve 12 is provided a gasket (seal ring) 36 which prevents the oil from entering into the space between the sleeve and the ring. A corresponding arrangement (not shown) is provided for the supply of gas to the other bore 21.
Fig. 3 shows the ring 20 in a smaller scale, seen from above.
The ring is composed of several elements being glued to one another at their transverse ends 40. In this example, the ring consists of six long side elements 37, two short end elements 39 and four corner elements 38. Dotted lines in the drawing (pos. 41) shows where the oil and gas supply is connected to the ring. As can be seen, the oil and gas is supplied to each of the long sides and each of the short ends respectively.
Though Fig. 3 shows a permeable ring made of several ele-ments, it is obviously possible, within the frame of the invention, to make the ring from one single piece of perme-able material. Further, it is obvious that the ring according to the invention can have other cross sections than what is shown in Fig. 1 and 2, and can be used for casting other ingot shapes than the one previously mentioned.
In Figs. 4 and 5 is shown the cross section of sircular ring assambled by means of gluing, and which is used in casting apparatus for casting ingots with sircular shape. The ring is made of ring elements 42,43,44 being provided with grooves 45 which after the assemblance forms rectangular or sircular holes (bores) 46 in the ring.
Fig. 6 shows another example of a permeable ring made of two ring elements, whereof an upper ring element 47 is partly overlapping a lower ring element 48. The two elements 47,48 are attached to one another by means of gluing.
_ 8 A slit 49 is provided between the two ring elements in their peripherical direction for the supply of oil to the ring via two diametrically arranged bores 50 (only one bore is reve-aled in the figure). The overlapping provides a more even oil distribution through the ring.
Gas may be supplied to the ring element 48 through a groove 50 streching along the circumference of the ring.
Claims (19)
1. A continuous or semi-continuous casting apparatus of the direct chill type for casting metallic materials, particularly metal ingots, said apparatus comprising, a mold defining a mold cavity with an open inlet for the introduction of molten metal, an open outlet for withdrawal of solidified metal, and coolant supply means for supplying coolant adjacent said outlet for cooling metal; a ring, formed of a material that is permeable to at least one of oil and gas, mounted in said mold at a position spaced from said inlet, said ring having a plurality of surfaces including at least one first surface facing and defining a portion of said mold cavity; at least one annular bore formed in said ring and extending through said ring throughout the entire annular dimension thereof; at least one hole extending through said ring from the exterior thereof and opening into said annular bore, such that at least one of oil and gas may be supplied from the exterior of said mold to said hole and then to said annular bore, whereby such at least one of oil and gas passes through said material of said ring and enters said mold cavity through said at least one first surface of said ring to form a layer between the metal within said mold cavity and the wall of said mold to prevent the metal from contacting said wall before the metal solidifies; and all of said surfaces of said ring other than said at least one first surface thereof being covered with a sealing agent preventing the escape therethrough of the at least one of oil and gas.
2. An apparatus as claimed in claim 1, wherein said ring has therein plural said annular bores.
3. An apparatus as claimed in claim 2, comprising two said annular bores.
4. An apparatus as claimed in claim 2, wherein said ring has therein plural said holes, each said hole opening into a respective one only of said annular bores.
5. An apparatus as claimed in claim 4, wherein each said annular bore has opening thereinto a plurality of said holes.
6. An apparatus as claimed in claim 1, wherein said mold includes, at a position slightly above said ring, an inwardly protruding portion, and said ring is positioned adjacent a corner defined between said inwardly protruding portion and a wall of said mold cavity therebelow.
7. An apparatus as claimed in claim 6, wherein said ring has formed therein two said annular bores including an upper bore for the supply thereto of oil and a lower bore for the supply thereto of gas.
8. An apparatus as claimed in claim 6, wherein said ring includes an upper portion extending upwardly at least to the level of said corner.
9. An apparatus as claimed in claim 8, wherein said ring includes an inwardly extending step defining said upper portion of said ring.
10. An apparatus as claimed in claim 9, wherein said step has a downwardly facing surface forming one said first surface.
11. An apparatus as claimed in claim 10, wherein said downwardly facing surface of said step of said ring is at a level no lower than a lower face of said inwardly protruding portion of said mold.
12. An apparatus as claimed in claim 9, wherein said upper bore is formed in said upper portion of said ring, at a position above a corner defined between said step and a lower portion of said ring, and said lower bore is formed in said lower portion of said ring.
13. An apparatus as claimed in claim 1, further comprising clamping means for mounting said ring in said mold.
14. An apparatus as claimed in claim 13, wherein said clamping means comprises a single clamping member.
15. An apparatus as claimed in claim 1, wherein said ring is formed of a plurality of members connected together at opposite ends thereof in end-to-end manner.
16. An apparatus as claimed in claim 1, wherein said ring is formed of a plurality of ring members connected together, and said annular bore is formed by annular grooves in said ring members.
17. An apparatus as claimed in claim 1, wherein said ring is rectangular.
18. An apparatus as claimed in claim 1, wherein said ring is circular.
19. An apparatus as claimed in claim 1, wherein said ring is formed of graphite.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO881633 | 1988-04-15 | ||
| NO881633A NO165711C (en) | 1988-04-15 | 1988-04-15 | CASTING DEVICE FOR CONTINUOUS OR SEMI-CONTINUOUS CASTING OF METAL. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1337733C true CA1337733C (en) | 1995-12-19 |
Family
ID=19890819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000596726A Expired - Fee Related CA1337733C (en) | 1988-04-15 | 1989-04-14 | Continuous or semi-continuous casting apparatus for casting metallic materials |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4962807A (en) |
| EP (1) | EP0337769B1 (en) |
| CA (1) | CA1337733C (en) |
| CZ (1) | CZ279783B6 (en) |
| DE (1) | DE68916312T2 (en) |
| ES (1) | ES2056212T3 (en) |
| NO (1) | NO165711C (en) |
| RU (1) | RU1836182C (en) |
| SK (1) | SK278166B6 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2007955A1 (en) * | 1990-01-17 | 1991-07-17 | Guy Leblanc | Lubrication system for casting moulds |
| NO300411B1 (en) * | 1995-05-12 | 1997-05-26 | Norsk Hydro As | Stöpeutstyr |
| US5873405A (en) * | 1997-06-05 | 1999-02-23 | Alcan International Limited | Process and apparatus for direct chill casting |
| US6840303B1 (en) | 1998-03-13 | 2005-01-11 | Honda Giken Kogyo Kabushiki Kaisha | Process for continuously casting light alloy and apparatus for continuously casting light alloy |
| NO310101B1 (en) * | 1999-06-25 | 2001-05-21 | Norsk Hydro As | Equipment for continuous casting of metal, especially aluminum |
| CN101332493B (en) * | 2008-07-31 | 2010-06-02 | 东北大学 | Gas film quick continuous casting device and method in magnetostatic field |
| CN102294445B (en) * | 2011-08-17 | 2013-06-05 | 中国科学院金属研究所 | Auxiliary semi-continuous casting crystallizer for low-frequency pulsed magnetic field of magnesium alloy and application thereof |
| CN103273021B (en) * | 2013-05-20 | 2015-08-19 | 东北大学 | A kind of device and method producing fine grain aluminum alloy round cast ingot |
| CN114393184A (en) * | 2021-12-30 | 2022-04-26 | 中铝材料应用研究院有限公司 | Oil gas sliding crystallizer beneficial to improvement of surface quality of aluminum alloy round ingot |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA821828B (en) * | 1981-04-02 | 1983-02-23 | Alusuisse | Process for cooling a continuously cast ingot during casting |
| US4597432A (en) * | 1981-04-29 | 1986-07-01 | Wagstaff Engineering, Inc. | Molding device |
| US4508160A (en) * | 1981-11-20 | 1985-04-02 | Swiss Aluminium Ltd. | Process for cooling in ingot during continuous casting |
| US4598763A (en) * | 1982-10-20 | 1986-07-08 | Wagstaff Engineering, Inc. | Direct chill metal casting apparatus and technique |
| EP0142341B1 (en) * | 1983-11-10 | 1988-07-13 | Aluminum Company Of America | Continuous casting |
| US4693298A (en) * | 1986-12-08 | 1987-09-15 | Wagstaff Engineering, Inc. | Means and technique for casting metals at a controlled direct cooling rate |
-
1988
- 1988-04-15 NO NO881633A patent/NO165711C/en not_active IP Right Cessation
-
1989
- 1989-04-12 ES ES89303632T patent/ES2056212T3/en not_active Expired - Lifetime
- 1989-04-12 EP EP89303632A patent/EP0337769B1/en not_active Expired - Lifetime
- 1989-04-12 DE DE68916312T patent/DE68916312T2/en not_active Expired - Fee Related
- 1989-04-14 CA CA000596726A patent/CA1337733C/en not_active Expired - Fee Related
- 1989-04-14 RU SU4613878A patent/RU1836182C/en active
- 1989-04-17 CZ CS892365A patent/CZ279783B6/en not_active IP Right Cessation
- 1989-04-17 SK SK2365-89A patent/SK278166B6/en unknown
- 1989-04-17 US US07/338,938 patent/US4962807A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| NO881633D0 (en) | 1988-04-15 |
| NO165711B (en) | 1990-12-17 |
| US4962807A (en) | 1990-10-16 |
| DE68916312D1 (en) | 1994-07-28 |
| EP0337769B1 (en) | 1994-06-22 |
| SK236589A3 (en) | 1996-02-07 |
| CZ236589A3 (en) | 1995-04-12 |
| CZ279783B6 (en) | 1995-06-14 |
| SK278166B6 (en) | 1996-02-07 |
| RU1836182C (en) | 1993-08-23 |
| NO881633L (en) | 1989-10-16 |
| EP0337769A3 (en) | 1990-12-27 |
| ES2056212T3 (en) | 1994-10-01 |
| NO165711C (en) | 1991-03-27 |
| DE68916312T2 (en) | 1994-12-01 |
| EP0337769A2 (en) | 1989-10-18 |
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| Date | Code | Title | Description |
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| MKLA | Lapsed |